Garrison, MD has a humid subtropical climate, with warm summers and mild winters. The average annual temperature is around 62°F (17°C) and the average annual precipitation is just over 43 inches (109 cm). Summers are long and hot, with temperatures often reaching into the 90s (32°C). Winters are mild, but can get cold at times, dipping down into the low 20s (-6°C). Snowfall is minimal but possible in Garrison throughout the winter months.
Garrison, Maryland gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Garrison averages 20 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 208 sunny days per year in Garrison. The US average is 205 sunny days.
Garrison gets some kind of precipitation, on average, 118 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 87 degrees
Winter Low: the January low is 24
Rain: averages 45 inches of rain a year
Snow: averages 20 inches of snow a year